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PIRSA:15090088

Video URL

https://pirsa.org/15090088

Characterizing the coherence of errors

Wallman, J. (2015). Characterizing the coherence of errors. Perimeter Institute for Theoretical Physics. https://pirsa.org/15090088

Joel Wallman Institute for Quantum Computing (IQC)

Talk numberPIRSA:15090088
DOI10.48660/15090088
Source RepositoryPIRSA
Collection
Talk Type Scientific Series
Subject

Abstract

I will introduce the unitarity, a parameter quantifying the coherence of a channel and show that it is useful for two reasons. First, it can be efficiently estimated via a variant of randomized benchmarking. Second, it captures useful information about the channel, such as the optimal fidelity achievable with unitary corrections and an improved bound on the diamond distance.